Russia has launched the largest aerial attack on Ukraine over a 24-hour period since the war began, hitting cities across the country with 948 drones, BBC reported. 

Ukraine's Air Force said 556 drones had been fired since 09:00 local time (07:00 GMT) on Tuesday, in an unusual daytime attack which killed at least three people and injured dozens. 

In the western city of Lviv, the 16th century Bernardine monastery - part of a Unesco World Heritage site in the city centre - was damaged, local officials said, according to BBC.